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<document> <header> <product>resin</product> <title>How to start Resin when Linux Boots</title> </header> <body> <localtoc/><s1 title="Acknowledgements"><p><em>Thanks to Guy McArthur and Carlos Hanson for the examples and muchof the explanation for this tutorial.</em></p></s1><s1 title="Modifying resin.sh"><p>The easiest way to start Resin when Linux boots is to modify yourresin.sh and create symbolic link in /etc/rc.d/rc3.d and /etc/rc.d/rc5.d.Because the boot process does not set environment variables, you'll needto set them in the resin.sh.</p><ol><li>Copy resin.sh to "resin-a.sh" in resin/bin and change permissions.</li><li>Configure JAVA_HOME, RESIN_HOME, PATH, and "-pid" in resin-a.sh.</li><li>Check that "resin-a.sh start" and "resin-a.sh stop" work from the command line when running as root.</li><li>"ln -s /usr/local/resin/bin/resin-a.sh /etc/rc.d/rc3.d/S86resin-a"</li><li>"ln -s /usr/local/resin/bin/resin-a.sh /etc/rc.d/rc5.d/S86resin-a"</li><li>"ln -s /usr/local/resin/bin/resin-a.sh /etc/rc.d/rc2.d/K14resin-a"</li><li>Reboot to test.</li></ol><p>A sample resin-a.sh might look like:</p><example>#! /bin/sh## ...#JAVA_HOME=/usr/javaexport JAVA_HOMERESIN_HOME=/usr/local/resinexport RESIN_HOMEPATH=/bin:/usr/bin:/usr/local/binexport PATHargs="-Xms75M -Xmx100M start -pid $RESIN_HOME/resin-a.pid"class=com.caucho.server.http.HttpServername=resinperl=/usr/local/bin/perlexec $perl $RESIN_HOME/bin/wrapper.pl -chdir -name "$name" \ -class "$class" $args $*</example><p>An advantage of this method is that you can use the same scriptto start and start the server interactively.</p></s1><s1 title="Linux booting background"><p>At startup, Linux runs the /etc/rc.d/rc script at the current runlevel(normally 3 or 5). All the Sxx scripts in /etc/rc.d/rc3.d/S*are started in order.</p><example title="Fragment of the rc script">for i in /etc/rc$runlevel.d/S*; do $i startdone</example><p>So S86resin-a will be called as "S86resin-a start" as the root user.Since the script can't assume any environment variables, it needs to setthem itself.</p><p>Since Resin is an application, as opposed to a system service, itshould be started late in the boot process. S86 is a decent choice. Thespecific order only matters if your startup depends on another service.For example, if you have a load-on-startup servlet that depends on adatabase, the database should be S85 or lower.</p><p>Some configurations boot up in runlevel 3 and others bootin runlevel 5. The actual boot order will then be {1,2,3} or {1,2,5}.A machine booting with runlevel 3 will have /etc/inittab with the followingline:</p><example title="/etc/inittab fragment">id:3:initdefault</example><p>On server shutdown, Linux calls the scripts in /etc/rc.d/rc2.d/K*in order.</p><example>for i in /etc/rc$runlevel.d/K*; do $i stopdone</example><p>In this case, Resin is an application, as opposed to a system service, itshould be killed early in the shutdown process.</p></s1><s1 title="Alternatives"><p>An alternative to modifying the resin.sh is to create another scriptthat passes arguments to the original resin.sh.</p><example>#!/bin/sh # script name: resin-start# # start/stop script for Resin RESIN_HOME=/usr/resin JAVA_HOME=/usr/java/jdk1.3 PATH="$PATH:/usr/java/jdk1.3/bin:/usr/X11R6/bin" export PATH JAVA_HOME RESIN_HOME ${RESIN_HOME}/bin/resin.sh -Xms75M -Xmx100M \ -java_home ${JAVA_HOME} "$*" </example><p>Guy McArthur writes</p><p>I find it a bit easier to edit wrapper.pl rather than creating ascript that passes in environment variables. But that's just becauseI'll be starting/stopping resin manually using resin.sh to trysomething out, so having that single point of control is good.</p><p>Carlos Hanson writes:</p><p>I originally started by editing wrapper.pl, but having a scriptthat passes the necessary arguments to resin.sh allows me toreinstall or upgrade Resin more easily. All I have to worry aboutis configuration files. This is important when dealing with developers newto Unix and maintaining a large number of production and developmentservers. We keep the script and the conf files in source control.</p></s1> </body></document>⌨️ 快捷键说明
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